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What I've read is that when Penske received 1040, they completed stripped/disassembled it and then went through it with a fine tooth comb on reassembly with an eye toward making any and all improvements they could before turning a wheel in anger. Motor was sent to Traco who handled the blueprinting/building to get the most out of the Ferrari engine.

"The results of this were that the car had no limited slip differential fitted, but a spool like the Porsche 935. This made the car a real handful because it had to literally be thrown into a corner, otherwise, it went straight. The lap times bore out the fact that it was quicker than the factory 512 Ms, not a fact that endeared Penske to Enzo Ferrari. Mark Donohue and David Hobbs were the drivers."
AND
"What we found during the restoration was very interesting. Penske had hidden a small auxiliary gas tank, which held just enough to get the car back to the pits if it ran out of gas. This contravened the Le Mans regulations, but nobody found it. Roger was always looking for the unfair advantage and with this, he had clearly found it!"

Honorary

1040 (Sunoco):
Converted in the USA to M configuration. Berry Plasti-Glass in Los Angeles/CA produced an entire new light weight body and the motor plus a spare one acquired from the factory were prepared by Traco Engineering (Jim Travers and Frank Coon) in Culver City/CA. Car was then painted darkblue and yellow in Sunoco (Sun Oil Co.) sponsoring colors.

Honorary

How many cars were built up by John Hajduk from the Mueller parts and are those cars properly identified as recreations/continuations?

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Excellent question, thank you.
The first question is: What is the correct definition of "properly identified as recreations/continuations"?.

Hajduk built two 512's with entirely new frames and used numbers "1008" and "1046" for them. Hajduk built them for Rob Dyson. Both cars were refused by the factory (20 January 2005).

1008 is the car in which Pedro Rodriguez was killed at the Norisring 11 July 1971. At the time of that crash 1008 belonged to Roland Kistler (carpet dealer, Rolanaflor sponsoring) in Switzerland (not Müller).
After the Rodriguez crash Kistler sold the wreck 5 October 1971 to Herbert Müller, who paid Swiss Francs CHF 34'251.10 for it. The wreck of 1008 was never rebuilt. It was dismantled and bits and pieces used for other 512's. Müller retained the chassis number tag and had it chrome plated.
In 1978 when Müller sold 1046 to Germany (Grohe) he used paperwork and identity of 1016 (instead of 1046) and kept the 1046 chassis tag.
Herbert Müller died in a Porsche 908/4 at the Nürburgring on 24 May 1981.

On the 26th March 1987 Herbert Müller's son Daniel Müller sold the two tags (1008 and 1046) ONLY (just the small metal pieces, NO frames or bits and pieces etc) to T. B. in USA, who paid Swiss Francs 150'000 at the time.
I have the bill of sale and receipt for this transaction.

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So many cars are restored to race configuration as started at a specific race... wouldn´t it be fun to restore this car to the finish line configuration and show it in Pebble?

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I've saying the same thing about many vintage race cars before, including some '60s(?) LeMans(?) winning(?) Ferrari that had a huge opening cut to its front panel for better cooling, allowing the car not only finish, but also win, IIRC.
Closest/only thing to this concept (=historical accuracy) I've seen was a '90s(s)Corvette(?) in a certain collection of LeMans winners and it was stated having never even been washed since the race. Super, super cool and true conservation/representation of history.
How many race winning vintage cars, including Ferraris, are now merely A. Lincoln's axes ?

I've saying the same thing about many vintage race cars before, including some '60s(?) LeMans(?) winning(?) Ferrari that had a huge opening cut to its front panel for better cooling, allowing the car not only finish, but also win, IIRC.
Closest/only thing to this concept (=historical accuracy) I've seen was a '90s(s)Corvette(?) in a certain collection of LeMans winners and it was stated having never even been washed since the race. Super, super cool and true conservation/representation of history.
How many race winning vintage cars, including Ferraris, are now merely A. Lincoln's axes ?

Excellent question, thank you.
The first question is: What is the correct definition of "properly identified as recreations/continuations"?.

Hajduk built two 512's with entirely new frames and used numbers "1008" and "1046" for them. Hajduk built them for Rob Dyson. Both cars were refused by the factory (20 January 2005).

The two Hajduk built cars are not using original Ferrari frames.

Marcel Massini

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At the end of college I teamed up with a local collector- his truck and trailer, my labor- and we put together an Indy car class for the Concours that year in Cincinnati (these days at Ault Park, back then at Cincinnati Country Day School in Indian Hill).
That's how I found myself at Hajduk's in Noblesville, IN to pick up a Lesovsky roadster belonging to Tom Mittler.
John Hajduk (Sr.) was my host that afternoon and was quite gracious in showing me around and explaining the projects in the shop. I remember a gentleman fabricator from New Zealand at work on the 512's as John explained the origin and intent of the project underway.
If memory serves, they had a 'real' 512 chassis in the shop at the time that they were using for templating, accuracy, etc.

Marcel, IIRC, Prancing Horse magazine did a feature on Hajduk's efforts on these two replica chassis (?).
Anyhow, thanks for the reminder of that adventure. I'm grateful to John Sr. (RIP) for such a great and memorable visit.

Honorary

At the end of college I teamed up with a local collector- his truck and trailer, my labor- and we put together an Indy car class for the Concours that year in Cincinnati (these days at Ault Park, back then at Cincinnati Country Day School in Indian Hill).
That's how I found myself at Hajduk's in Noblesville, IN to pick up a Lesovsky roadster belonging to Tom Mittler.
John Hajduk (Sr.) was my host that afternoon and was quite gracious in showing me around and explaining the projects in the shop. I remember a gentleman fabricator from New Zealand at work on the 512's as John explained the origin and intent of the project underway.
If memory serves, they had a 'real' 512 chassis in the shop at the time that they were using for templating, accuracy, etc.

Marcel, IIRC, Prancing Horse magazine did a feature on Hajduk's efforts on these two replica chassis (?).
Anyhow, thanks for the reminder of that adventure. I'm grateful to John Sr. (RIP) for such a great and memorable visit.